InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Choose the correct ordera). `Si lt P lt Cl lt S ` (2nd ionisation energy)b)`F lt O lt N lt C` (2nd ionsiation energy)c)`F gt C gt Br gt I` (electronegativity)d)`Be^(2+) lt Li^(+) lt Na^(+) lt K^(+)` (Mobility of ion in aqueous solution )A. `Si lt P lt Cl lt S ` (2nd ionisation energy)B. `F lt O lt N lt C` (2nd ionsiation energy)C. `F gt C gt Br gt I` (electronegativity)D. `Be^(2+) lt Li^(+) lt Na^(+) lt K^(+)` (Mobility of ion in aqueous solution ) |
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Answer» Correct Answer - A::C::D |
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| 2. |
S-1:- `Na_(2)O lt MgO lt ZnO lt P_(4)O_(10)` : acidic property S-2:- `Na lt Si gt Mg gt Al` : First ionisation potential S-3:- `F gt Cl gt Br` : Electron affinity. S-:- `Te^(2-) gt I^(-) gt Cs^(+) gt Ba^(2+)` : Ionic sizeA. TTTTB. TTFTC. TFFTD. TFTT |
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Answer» Correct Answer - B |
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| 3. |
Which of the following is/are correct order regarding radius ?a)`Al^(3+) lt Mg^(2+) lt Na^(+)`b)`B^(3+) lt Ga^(3+) lt Al^(3+)`c)`Be^(2+) lt B^(3+) lt Li^(+)`d)`Cl^(-) lt S^(2) lt P^(3-)`A. `Al^(3+) lt Mg^(2+) lt Na^(+)`B. `B^(3+) lt Ga^(3+) lt Al^(3+)`C. `Be^(2+) lt B^(3+) lt Li^(+)`D. `Cl^(-) lt S^(2) lt P^(3-)` |
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Answer» Correct Answer - A::D |
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| 4. |
Which of the following statements (s) is/are not true about the diagonal relationship of `Be` and `Al`?A. Both reacts with alkali to liberate hydrogenB. Their oxides are basicC. They are made passive by nitric acidD. Their carbides give acetylene on treatment with water . |
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Answer» Correct Answer - B::D |
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| 5. |
Which of the following are correct ?A. The configuration of Mo`(Z = 42)` is [Kr] `4d^(5) 5s^(1)`B. The configuration of Mo(Z= 42) is [Kr] `4d^(4) 5s^(2)`C. The configurtion of Ag(Z = 47) is [Kr] `4d^(10) 5s^(1)`D. The configurationof Ag (Z= 47) is [Kr] `4d^(10) 5s^(2)` |
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Answer» Correct Answer - A::C::D |
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| 6. |
Which of the following is / are the correct order of mobility in aqueous solutions ?a)`Li^(+) lt Na^(+) lt K^(+)`b)`Na^(+) lt Mg^(2+) lt Al^(3+)`c)`Al^(3+) lt Mg^(2+) lt Na^(+)`d)`Li^(+) gt Na^(+) gt K^(+)`A. `Li^(+) lt Na^(+) lt K^(+)`B. `Na^(+) lt Mg^(2+) lt Al^(3+)`C. `Al^(3+) lt Mg^(2+) lt Na^(+)`D. `Li^(+) gt Na^(+) gt K^(+)` |
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Answer» Correct Answer - A::C::D |
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| 7. |
Which of the following is / are the correct order of mobility in aqueous solutions ?A. `Li^(+) lt Na^(+) lt K^(+)`B. `Na^(+) lt Mg^(2+) lt Al^(3+)`C. `Al^(3+) lt Mg^(2+) lt Na^(+)`D. `Li^(+) gt Na^(+) gt K^(+)` |
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Answer» Correct Answer - A::C::D |
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| 8. |
In most of the lanthanides, the penultimate shell contains __________electrons in __________ orbitals. |
| Answer» Correct Answer - 8, s, p | |
| 9. |
Which of the following has the same number of electrons in its outermost shell and penultimate shell ?A. `AI^(3+)`B. `Ca^(2+)`C. `F^(-)`D. `N^(3-)` |
| Answer» Correct Answer - B | |
| 10. |
Which group of elements is analogous to the lanthanides?A. HalidesB. ActinidesC. ChalcogenidesD. Borides |
| Answer» Correct Answer - B | |
| 11. |
Three elements, X, Y and Z belong to the same period. Their oxides are acidic, amphoteric and basic respectively. The order of electronegative of these elements in the periodic table isA. X, Y, ZB. Y, Z, XC. X, Z, YD. Z, Y, X |
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Answer» Correct Answer - D |
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| 12. |
Oxide that is most acidicA. `Cl_(2)O_(7)`B. `SO_(3)`C. `P_(4)O_(10)`D. `N_(2)O_(5)` |
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Answer» Correct Answer - A |
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| 13. |
Element P,Q, R and S belong to the same group. The oxide of P is acidic, oxide of Q and R are amphoteric while the oxide of S is basic. Which of the following elements is the most electropositive ?A. RB. QC. PD. S |
| Answer» Correct Answer - C | |
| 14. |
Which oxide produces the most acidic solution when `0.1` mol is added to `1L` of `H_(2)O`?A. `BaO`B. `BaO_(2)`C. `SO_(2)`D. `SO_(3)` |
| Answer» Correct Answer - D | |
| 15. |
The most acidic oxide is:A. `SO_(3)`B. `P_(2)O_(5)`C. `CI_(2)O_(7)`D. `P_(2)O_(3)` |
| Answer» Correct Answer - C | |
| 16. |
Which of the following is most acidic ?A. `H_(2)Te`B. `H_(2)O`C. `H_(2)S`D. `H_(2)Se` |
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Answer» Correct Answer - A Te is biggest which will give `H^(+)` quickly |
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| 17. |
Which oxide of `N` is isolectronic with `CO_(2)`A. `NO_(2)`B. `NO`C. `N_(2)O`D. `N_(2)O_(3)` |
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Answer» Correct Answer - C `N_(2)O` Total electrons `rArr 14 +8 = 22` `CO_(2)` Total electrons `rArr 6 +16 = 22` |
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| 18. |
Which of the following is correct order of stability:A. `TI^(3+) gt BI^(3+)`B. `PbO_(2) gt PbO`C. `BiI_(5) lt BiF_(5)`D. `Sn^(2+) = Ge^(2+)` |
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Answer» Correct Answer - C `BiI_(5)` does not exists because of `I-`being very strong reducing agent. So it reduces `Bi^(5+)` to `Bi^(3+)` and forms `BiI_(3)`. |
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| 19. |
Fill in the blanks: Compounds that formally contain `Pb^(4+)` are easily reduced to `Pb^(2+)`. The stability of the lower oxidation state is due to………… . |
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Answer» Correct Answer - Inert Pair Effect Due to inert pair effect, `Pb^(2+)` (two less than normal oxidation state) is more stable than `Pb^(4+)` (normal oxidation state). |
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| 20. |
In Lother Meyer plot, the peaks are occupied byA. alkali metalsB. highly electropositive elementsC. elements habing large atomic volumeD. all of the above |
| Answer» Correct Answer - D | |
| 21. |
In Lother Meyer plot, the peaks are occupied byA. Alkali metalB. Alkaline earth metalsC. HalogenD. Noble gases |
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Answer» Correct Answer - A |
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| 22. |
The peaks in ionisation potential curves are occupied byA. alkali metalsB. alkaline earth metalsC. noble gas elementsD. halogens |
| Answer» Correct Answer - C | |
| 23. |
Which has least ionization potential?A. `Li`B. `Cs`C. `Cl`D. `I` |
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Answer» Correct Answer - B |
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| 24. |
The peaks in ionisation potential curves are occupied byA. Alkali metalsB. Inert gasesC. Transition metalsD. Halogens |
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Answer» Correct Answer - B |
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| 25. |
The first ionization energy value of an element area 191, 578,872 and 5692 kcals. The number of valence electrons in the element areA. 5B. 2C. 3D. 4 |
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Answer» Correct Answer - C |
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| 26. |
The ionisation energy `(IE_(1))` of an atom is defined as the energy needed to remove an electron from gaseous atom in its ground state. The 2nd ionisation energy `(IE_(2))` is the additional energy needed to remove the 2nd electron and so on. The successive ionisation energy of any species is increasing always. Generally, the first ionisation energy increase along a period. But there are some exceptions. One which is not an exception is:A. N and OB. Na and MgC. Mg and AID. Be and B |
| Answer» Correct Answer - B | |
| 27. |
Statement-I : `IE_(3)` of `Mn` is more than `IE_(3)` of Fe. Statement-II : After the removal of 2 electron Fe acquire half filled electronic configuration.A. If both Statement-I & Statement-II are True & the Statement-II is a correct explanation of the Statement-I.B. If both Statement-I & Statement-II are True but Statement-II is not a correct explanation of the Statement-I.C. If Statement-I is True but the Statemet-II is FalseD. If Statement-I is False but the Statement-II is True |
| Answer» Correct Answer - C | |
| 28. |
The values of `IE(I), IE(II), IE(III)` and `IE(IV)` of an atom are respectively `7.5 eV, 25.6eV, 48.6eV` and `170.6eV`. The electronic configuration of the atom will be :A. `1s^(2),2s^(2)2p^(6),3s^(1)`B. `1s^(2),2s^(2)2p^(6),3s^(2)3p^(1)`C. `1s^(2),2s^(2)2p^(6),3s^(2)3p^(3)`D. `1s^(2),2s^(2)2p^(6),3s^(2)` |
| Answer» Correct Answer - B | |
| 29. |
Which represents alkali metals (ie., 1 group metals) based on `(IE)_(1)` and `(IE)_(2)` values?A. `{:(,(IE)_(1),(IE)_(2)),(Y,100,110):}`B. `{:(,(IE)_(1),(IE)_(2)),(Y,95,120):}`C. `{:(,(IE)_(1),(IE)_(2)),(Z,95,500):}`D. `{:(,(IE)_(1),(IE)_(2)),(M,200,250):}` |
| Answer» Correct Answer - C | |
| 30. |
Statement-I : `Cs` and F combines violently to form `CsF`. Statement-II : Cs is most electropositive and F is most electronegative.A. If both Statement-I & Statement-II are True & the Statement-II is a correct explanation of the Statement-I.B. If both Statement-I & Statement-II are True but Statement-II is not a correct explanation of the Statement-I.C. If Statement-I is True but the Statemet-II is FalseD. If Statement-I is False but the Statement-II is True |
| Answer» Correct Answer - A | |
| 31. |
Statement-I : `O rarr O^(2-)` is associated with energy absorbed but yet several oxides are stable enough Statement-II : The lattice energy involved to form its oxides overcomes the other energy absorbed.A. If both Statement-I & Statement-II are True & the Statement-II is a correct explanation of the Statement-I.B. If both Statement-I & Statement-II are True but Statement-II is not a correct explanation of the Statement-I.C. If Statement-I is True but the Statemet-II is FalseD. If Statement-I is False but the Statement-II is True |
| Answer» Correct Answer - A | |
| 32. |
Consider the following statements. (P) `IE(I)` of nitrogen atom is ore than `IE(I)` of oxygen atom. (Q) Electron affinity of oxygen is less than sulphur atom. (R) Electronegativity of an atom has no relation with its ionization enthalpy and electron gain enthalpy. Which of the above statements are correct?A. P,QB. P,RC. Q,SD. P,Q and R |
| Answer» Correct Answer - A | |
| 33. |
Assertion (A) : `EA` of `O` is less than that of `F` but greater than that of `N`. Reason (R ): `IE` is as follows: `N gt O gt F`.A. If both Statement-I & Statement-II are True & the Statement-II is a correct explanation of the Statement-I.B. If both Statement-I & Statement-II are True but Statement-II is not a correct explanation of the Statement-I.C. If Statement-I is True but the Statemet-II is FalseD. If Statement-I is False but the Statement-II is True |
| Answer» Correct Answer - C | |
| 34. |
`{:(A^(-) (g) rarr A^(2+)(g),,DeltaH = 1100KJ//mol),(A(g)rarrA^(2+)(g),,DeltaH = 1200 KJ//mol):}` Electron gain enthalpy of `A` is `P xx 10^(2) KJ//mol`. What is the value of `P`? |
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Answer» Correct Answer - 1 `A(g) +e^(-) rarr A^(-)(g) DeltaH = + E.G.E ….(1)` `A(g) rarr A^(2+) (g)+2e^(-) DeltaH = 1200 KJ//mol ……..(2)` `A^(-)(g) rarr A^(2+)(g)+3e^(-) DeltaH = 1100 KJ//mol ……(3)` `Eq.(3) = (2) - (1)` `- E.G.E +1200 = 1100` `-E.G.E =- 100 kJ//mol` `P = 1`. |
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| 35. |
Which out of the `N` or `O` has higher electron gain enthalpy?A. `Cl,F`B. `O,S`C. `O,F`D. `S,Cl` |
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Answer» Correct Answer - A Negative electron gain enthalpy of F is less than Cl. This is due to the fact that when an electron is added to F, the added electron goes to the smaller `n=2` energy level and experiences significant repulsion from the other electrons present in this level. In `Cl` , the electron goes to the larger `n=3` energy level and consequently occupies a larger region of space leading to much less electron`-` electron repulsion. |
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| 36. |
Which one of the following oxides is neutral ?A. `CO`B. `SnO_(2)`C. `ZnO`D. `SiO_(2)` |
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Answer» Correct Answer - 1 CO is neutral towards litmus. `SnO_(2)` and `ZnO` are amphoteric as they form salts and water with acids and bases, `SiO_(2)` is acidic as it forms salts with bases. `SiO_(2)+2NaOH rarrNa_(2)SiO_(3)+H_(2)O` |
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| 37. |
When a neutral atom is converted to the anion itsA. Atomic number increasesB. Atomic number decreasesC. Size increasesD. Mass number increases |
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Answer» Correct Answer - C |
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| 38. |
Which among the following factors is the most important in making fluorine the strongest oxidizing halogen ?A. Bond dissociation energyB. Ionisation enthalpyC. Hydration enthalpyD. Electron affinity |
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Answer» Correct Answer - C |
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| 39. |
The number of periods in the long from of periodic table isA. 6B. 7C. 8D. 18 |
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Answer» Correct Answer - B |
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| 40. |
Which of the following is not an anamalous pair?A. `s, Cl`B. `Te, I`C. `Co, Ni`D. `Ar, k` |
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Answer» Correct Answer - A |
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| 41. |
Which of the following are wrong?a)Noble gases have highest IE in respective periodsb)ZnO is amphoteric oxidec)Ionic radius is inversely proportional to effective nuclear charged)Zn, Cd, Hg have high boiling points among d-block elementsA. Noble gases have highest IE in respective periodsB. ZnO is amphoteric oxideC. Ionic radius is inversely proportional to effective nuclear chargeD. Zn, Cd, Hg have high boiling points among d-block elements |
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Answer» Correct Answer - D |
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| 42. |
Regarding electron affinity, the wrong statement isA. The E.A. of "Cl" is more than that of "F"B. The E.A. of "S" is more than that of "P"C. The E.A. of "Si" is more than that of "C"D. The E.A. of "Ne" is more than that of "F" |
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Answer» Correct Answer - D |
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| 43. |
Electrongativity is not applicable for the element with configurationA. `1s^(2)`B. `1s^(1)`C. `1s^(2)2s^(2)2p^(1)`D. `1s^(2)2s^(2)2p^(5)` |
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Answer» Correct Answer - A |
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| 44. |
Which of the following is wrong .A. The maximum covalency of Boron is 4 where as that of Al is 6 .B. The order of EN of IIIA group elements is `B gt Al lt Ga lt In lt TI`C. Down the group the oxidising power increases .D. The ordder of acidic nature : `N_(2)O_(3) gt P_(2) O_(3) gt As_(2) O_(3) gt Sb_(2)O_(3) gt Bi_(2)O_(3)` |
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Answer» Correct Answer - C |
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| 45. |
When the polarity of bond A-B is "D" expressed in Si units, the relationship between their Electronegativity difference isA. `X_(A) - X_(B) = 0.1017 Delta`B. `X_(A) - X_(B) = sqrt(0.208)Delta`C. `X_(A) - X_(B) = sqrt(0.1017)Delta`D. `X_(A) - X_(B) = 0.1017 sqrt(Delta)` |
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Answer» Correct Answer - C |
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| 46. |
Which of the following best describes the relationship of electronegativity, bond energy and bond moment in a hetero diatomic molecule when the electronegativity difference increasesA. Both bond energy and bond moment increase.B. bond energy decreases but moment increases.C. bond energy increases but bond moment decreases.D. both bond energy and bond moment decreases. |
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Answer» Correct Answer - A |
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| 47. |
The correct order of electron affinity of B , C , N and O isA. `O gt C gt N gt B`B. `B lt N gt C gt O`C. `O gt C gt B gt N`D. `O lt B gt C gt N` |
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Answer» Correct Answer - C |
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| 48. |
It has been found that the atoms combine to form bonds in order to keep 8 valance electrons for stability . Hypothetically , if stability is attained with 7 electrons instead of 8 electrons , the formula of the stable nitride ion would beA. `N^(+)`B. `N^(2-)`C. `N^(2+)`D. `N^(3-)` |
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Answer» Correct Answer - B |
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| 49. |
the amount of energy released when `10^(6)` atoms of iodine in vapour state are converted to `I^(-)` ions is `4.8 xx 10^(-13) J`. What is the electron affinity of iodine in ev/atom.A. `6eV`B. `3eV`C. `5eV`D. `1.5eV` |
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Answer» Correct Answer - B |
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| 50. |
The `IE_(1)` of Cs is 376 kj/mole . The number of Cs atoms that can be converted to `Cs^(+)` ions by 1J energy isA. `1.60 xx 10^(18)`B. `6.023 xx 10^(18)`C. `1.505 xx 10^(23)`D. `3.011 xx 10^(18)` |
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Answer» Correct Answer - A |
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